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Ms Madelyn Yeo, 34, works out without aircon and uses equipment powered by her bodyweight and not electricity.

Ms Madelyn Yeo works out without air-conditioning and uses equipment powered by her bodyweight and not electricity.

ST PHOTO: SHINTARO TAY

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SINGAPORE – Around 5am every morning, Ms Madelyn Yeo begins a three-hour workout in her parents’ HDB flat in Clementi.

The 34-year-old starts with high-intensity interval training using only bodyweight exercises; then lifts weights; and finally sweats it out on a vertical climber powered by her movements, not by electricity.

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